Alert archive / Georgia / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 202, NWS Atlanta, GA

July 11, 2016Henry County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 11, 2016, 6:16 PM EDT for Henry County, Georgia. It was in force for 29 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 11, 2016, 6:16 PM EDT (22:16 UTC)
Expired
Jul 11, 2016, 6:45 PM EDT
In force
29 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Henry County, GA

The radar

The Atlanta radar (KFFC), 36 km from the middle of the area, began a volume at 22:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jul 11, 6:35 PM EDTTSTM WND DMG1 Wnw Red Oak, GATWO TREES DOWN AND SOME LIMBS OFF WALT STEPHENS ROAD NEAR THE HENRY COUNTY LINE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.3 hours before the alert went out and 30 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2016-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 133 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2016-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
133 J/kg
Mixed-layer CIN
-205 J/kg
Mixed-layer LCL
1028 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

907 
WUUS52 KFFC 112216
SVRFFC
GAC151-112245-
/O.NEW.KFFC.SV.W.0202.160711T2216Z-160711T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
616 PM EDT MON JUL 11 2016

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HENRY COUNTY IN GEORGIA...

* UNTIL 645 PM EDT

* AT 616 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER HAMPTON...OR
  NEAR MCDONOUGH...MOVING NORTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  MCDONOUGH...STOCKBRIDGE...HAMPTON...LOVEJOY...LOCUST GROVE...LUELLA...
  ATLANTA MOTOR SPEEDWAY...EAGLES LANDING...HIDDEN VALLEY PARK...
  FLIPPEN...BLACKSVILLE...OLA...KELLEYTOWN AND LAKE SPIVEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6 OR TWEET US YOUR REPORT AT NWSATLANTA.

&&

LAT...LON 3344 8430 3355 8429 3355 8426 3359 8424
      3365 8428 3365 8425 3363 8424 3364 8419
      3356 8413 3354 8405 3349 8403 3348 8395
      3345 8392 3331 8413 3334 8415 3334 8425
      3335 8425 3335 8431 3339 8436 3343 8435
TIME...MOT...LOC 2216Z 221DEG 27KT 3342 8425 

HAIL...0.75IN
WIND...60MPH
 
$$
1 follow-up statement
185 
WWUS52 KFFC 112234
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
634 PM EDT MON JUL 11 2016

GAC151-112245-
/O.CON.KFFC.SV.W.0202.000000T0000Z-160711T2245Z/
HENRY GA-
634 PM EDT MON JUL 11 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR HENRY COUNTY...

AT 634 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MCDONOUGH...
MOVING NORTHEAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
MCDONOUGH...STOCKBRIDGE...LOCUST GROVE...HIDDEN VALLEY PARK...FLIPPEN...
BLACKSVILLE...OLA...KELLEYTOWN...EAGLES LANDING AND LAKE SPIVEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6 OR TWEET US YOUR REPORT AT NWSATLANTA.

&&

LAT...LON 3355 8429 3355 8426 3359 8424 3365 8428
      3365 8425 3363 8424 3364 8419 3356 8413
      3354 8405 3349 8403 3348 8395 3345 8392
      3331 8413 3334 8415 3341 8422 3344 8430
TIME...MOT...LOC 2234Z 221DEG 27KT 3352 8414 

HAIL...0.75IN
WIND...60MPH
 
$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 3:24 PM EDTSpecial Weather StatementFFCWebster36 min
Jul 11, 3:39 PM EDTSevere Thunderstorm WarningFFCMarion, Schley, Stewart, Sumter, Webster51 min
Jul 11, 4:41 PM EDTSpecial Weather StatementFFCHarris34 min
Jul 11, 5:08 PM EDTSevere Thunderstorm WarningFFCHarris, Meriwether, Talbot, Troup52 min
Jul 11, 5:10 PM EDTSpecial Weather StatementFFCTroup35 min
Jul 11, 5:31 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Meriwether, Troup44 min
Jul 11, 6:02 PM EDTSpecial Weather StatementFFCFulton28 min
Jul 11, 6:06 PM EDTSpecial Weather StatementFFCCobb39 min
Jul 11, 6:12 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Forsyth, Fulton, Paulding48 min
Jul 11, 6:13 PM EDTSevere Thunderstorm WarningFFCClayton, Fayette32 min
Jul 11, 6:31 PM EDTSevere Thunderstorm WarningFFCDeKalb, Gwinnett, Newton, Rockdale, Walton29 min
Jul 11, 7:01 PM EDTSpecial Weather StatementFFCBartow, Cherokee, Dawson, Floyd, Forsyth, Gordon and 3 more44 min
Jul 11, 7:01 PM EDTSevere Thunderstorm WarningFFCBarrow, DeKalb, Gwinnett, Newton, Rockdale, Walton29 min
Jul 11, 7:09 PM EDTSevere Thunderstorm WarningFFCCherokee, Pickens36 min
Jul 11, 7:33 PM EDTSpecial Weather StatementFFCBarrow, Gwinnett, Jackson, Oconee, Walton27 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.